A three-judge panel of the U.S. 9th Circuit Court of Appeals plans to release its ruling on the constitutionality of Calfornia's Proposition 8, which banned gay marriage in the state, at 1 p.m. ET on Tuesday (10 a.m. in California), the court just announced.

As NPR's Richard Gonzales reported in November, Prop 8 was "struck down as unconstitutional by a federal judge more than a year ago. Both former governor Arnold Schwarzenegger and then attorney general Jerry Brown took the unusual position of declining to appeal, so the sponsors of Prop 8 took it upon themselves to file an appeal before the U.S. 9th Circuit Court of Appeals."

Richard added that "regardless of the finding, the 9th Circuit is expected by all parties to be just a legal stop before the matter goes to the U.S. Supreme Court."